package demo1;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/write")
public class ContextServlet extends HttpServlet {
    @Override
    protected void doGet(
            HttpServletRequest req, HttpServletResponse resp
            )throws ServletException, IOException{
        resp.setContentType("text/html;charset=UTF-8");
        ServletContext context=this.getServletContext();
        //向域对象中存入数据
        context.setAttribute("str","helloWorld");
        resp.getWriter().write("往servletContext里面写入数据成功");
    }
}
